Laravel錯誤。請求不會退出，爲什麼？

Question

這是控制器頁面。錯誤說

請求不存在

我無法找到原因。

<?php 

namespace App\Http\Controllers; 

use Illuminate\Foundation\Bus\DispatchesJobs; 
use Illuminate\Routing\Controller as BaseController; 
use Illuminate\Foundation\Validation\ValidatesRequests; 
use Illuminate\Foundation\Auth\Access\AuthorizesRequests; 

class Controller extends BaseController 
{ 
    use AuthorizesRequests, DispatchesJobs, ValidatesRequests; 

    public function insert(Request $req) 
    { 
      $name=$req->input('task_name'); 

      $detail=$req->input('task_detail'); 

      $data=array('task_name'=>$name,'task_detail'=>$detail); 

      DB::table('tasks')->insert($data); 
      echo "success"; 
    } 
} 

Answer 1

添加命名空間

use App\Http\Requests\Request;